Dear all;
Linear regression results, for a dichotomous variable,
are comparable to those of a ttest. That is if I
regress
. regress mpg foreign
The model F(1,72) = 13.18, Prob > F = 0.0005
as expected, is the same as that obtained from the
t-test. That is, the t-test and the above regress
tests the null that the means of the two groups
(foreign and domestic)are the same.
Can I interpret the results from -qreg- in the same
way. If I type
. qreg mpg foreign
followed by
. test foreign
does this test the null that the MEDIANS of the two
groups (foreign and domestic)are the same?
Best,
Ricardo.
=====
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
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